Cartridges of cannabidiol (CBD)-rich hemp oil for medical use are displayed during the International Cannabis Association Convention in New York, October 12, 2014. (Photo by Eduardo Munoz/Reuters)

People attend the International Cannabis Association Convention in New York, October 12, 2014. (Photo by Eduardo Munoz/Reuters)

Cannabidiol (CBD) hemp products are seen during the International Cannabis Association Convention in New York, October 12, 2014. (Photo by Eduardo Munoz/Reuters)

Chocolates prepared with cannabis for medical purposes are seen during the International Cannabis Association Convention in New York, October 12, 2014. (Photo by Eduardo Munoz/Reuters)

Chocolates prepared with cannabis for medical purposes are seen during the International Cannabis Association Convention in New York, October 12, 2014. (Photo by Eduardo Munoz/Reuters)

Cannabidiol (CBD) hemp beauty products are seen during the International Cannabis Association Convention in New York, October 12, 2014. (Photo by Eduardo Munoz/Reuters)

Information of where to buy weed is seen attached to clips during the International Cannabis Association Convention in New York, October 12, 2014. (Photo by Eduardo Munoz/Reuters)

Electronic vaporizers for use with cannabidiol (CBD)-rich hemp oil are displayed during the International Cannabis Association Convention in New York, October 12, 2014. (Photo by Eduardo Munoz/Reuters)

A woman uses a electronic vaporizers with cannabidiol (CBD)-rich hemp oil while attending the International Cannabis Association Convention in New York, October 12, 2014. (Photo by Eduardo Munoz/Reuters)

Electronic vaporizers for use with cannabidiol (CBD)-rich hemp oil are displayed during the International Cannabis Association Convention in New York, October 12, 2014. (Photo by Eduardo Munoz/Reuters)

Electronic vaporizers for use with cannabidiol (CBD)-rich hemp oil and chocolates made with cannabis are displayed during the International Cannabis Association Convention in New York, October 12, 2014. (Photo by Eduardo Munoz/Reuters)